I would like to know which power supply to choose - Corsair AX760i or Enermax 750W Platimax.
I don't want anything from Seasonic, because I had X-750 and X-760 and I had problems with them (750 died and loud 760).

I need a really quiet, stable power supply with very good (or perfect;p ) parameters. What to choose?

Both appear to be great power supplies but come with a premium price tag....

There are other more affordable options that will suit your needs but I have always like the Corsair units, but in your case you may want to go with the Enermax due to the fact that most if not all the corsair PSUs in the AX series are re branded seasonic units..... Which it is unfortunate to hear you have had bad luck with... because they are generally extremely solid units...